One drunken night when I was 17, one of the guys passed out. Someone who was über-drunk decided to shave his eyebrows, and nearly shredded the guys forehead. He then poured washing up liquid on him (which I didn't know about at the time).
Anyways, when the time came for everyone to leave, I poured water on the guy's face. After slipping about a bit, I found it amusing that there were soapy bubbles everywhere.
The guy stopped drinking after that happened.